9. (5 points) Q1.....Q, is a random sample from a distribution with mean vo and variance 28. Which of the following are correct? (a) Q is unbiased for VB. (b) 1 EN, @) is unbiased for 23. (c) Q' is unbiased for B. " Tion is unbiased for 8. () -TEE (Q: -Q) is unbiased for B. 10. (5 points) A Poisson( )) random sample Nj,. . .; N, has MLE A = N, score S(X) = n( 4 - 1) and Fisher information /(A) = 4. Which of the following hold, as n - co? (a) N- 4 normal(0, 1). Va/x (N-X1 4 chi-square (1). "(X) _ chi-square (n). (d) N - normal(A, A). (e ) 50) _ normal(0, 1). IIX)